Output
PS> "f"
f
PS> Write-Output "f"
f
PS> Write-Output "f","h"
f
h
PS> Write-Output "f","h",""
f
h
PS> Write-Output "f","h","" | % {$_ -ne $null}
True
True
True
PS> Write-Output "f","h","" | % {$_ -ne ""}
True
True
False
PS> Write-Output "f","h","" | ? {$_ -ne ""}
f
h
PS>
Memo
変数のみで出力されるのは、既定でこれが働くおかげらしい。